package com.example.demo.config;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class ApplicationContextAwareConfig implements ApplicationContextAware {
    private static ApplicationContext context;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        context = applicationContext;
    }

    public static ApplicationContext getAcclicationContext(){
        return context;
    }

    /**
     * getBeanByName
     * @param beanName
     * @return
     */
    public static Object getBean(String beanName){
        return getAcclicationContext().getBean(beanName);
    }

    /**
     * getBeanByClassName
     * @param className
     * @param <T>
     * @return
     */
    public static <T>T getBean(Class<T> className){
        return getAcclicationContext().getBean(className);
    }
}
